Metal box body comprising a reinforcing moulding

ABSTRACT

Disclosed is a container including a box body made of a metal material, the box body including a side wall closed by at least one bottom wall. The side wall includes at least one reinforcing zone that extends over at least part of the height and the circumference of the side wall. The reinforcing zone includes at least one reinforcing moulding. The virtual lines of the reinforcing zone, designed to form straight virtual lines on the reinforcing zone when it is set flat, are each intersected by the at least one reinforcing moulding. Preferably, the at least one reinforcing moulding consists of a non-straight reinforcing moulding with a non-straight contour.

TECHNICAL FIELD TO WHICH THE INVENTION RELATES

The present invention generally relates the field of containers having a can body made of a metal material and a lateral wall of which includes at least one reinforcing moulding.

TECHNOLOGICAL BACK-GROUND

Some containers comprise a can body made of a metal material.

The walls of this can body must resist to different stresses to prevent deformations liable to deteriorate the mechanical properties of the container.

In particular, the lateral wall is particularly sensitive to two types of deformations:

-   -   the facet deformations, or “paneling”, liable to occur upon an         excessive decrease of the inner pressure (or equivalently upon         an excessive increase of the outer pressure), and     -   the deformations in axial crushing, or “crush”, liable to occur         in case of an excessive axial force.

Moreover, in case of initiation of a deformation, the latter is liable to propagate over the whole height of the lateral wall.

To remedy these phenomena, it is common to form at least one reinforcing moulding on the lateral wall, so as to define an annular reinforcing strip extending over at least part of the height of said lateral wall.

These reinforcing mouldings are straight, extending generally parallel to the transverse directing lines, or even parallel to the longitudinal generating lines.

But, in practice, such reinforcing mouldings are efficient to fight only one of the two above-mentioned deformations (either facet or axial crushing deformation).

The moulding depth allows choosing which resistance will be favoured: a shallow depth favours the resistance to axial crush deformation, whereas a deeper depth favours the resistance to facet deformation.

There hence exists a need for a new container structure that would be able to show an improved resistance to the two above-mentioned deformations.

It would also be interesting that, in the event of initiation of a deformation, the latter cannot propagate over the height of the lateral wall.

OBJECT OF THE INVENTION

In order to remedy the above-mentioned drawback of the state of the art, the present invention proposes a new container structure whose can body comprises a lateral wall whose resistance performances are improved against both facet deformations and axial crush deformations.

For that purpose, the container according to the invention comprises a can body made of a metal material; said can body comprising a lateral wall closed by at least one bottom wall.

The lateral wall includes at least one reinforcing area that extends over at least part of the height and the circumference of said lateral wall.

The reinforcing area has a plurality of virtual lines that are intended to form straight virtual lines on said reinforcing area set flat, advantageously longitudinal generating lines, transverse directing lines and inclined lines.

The reinforcing area includes at least one reinforcing moulding.

And said virtual lines of said reinforcing area are each intersected by said at least one reinforcing moulding.

The particular structure of the reinforcing area has for interest to provide an improve and simultaneous resistance to the facet deformations and to the axial crush deformations.

Likewise, compared with a can body of the prior art, the lateral wall hence shows an improved performance for a same thickness or a same performance for a reduced thickness.

This particular structure of the reinforcing area has also for interest to limit, or even to block, the propagation of deformations.

This structure also allows delaying the occurrence of the failure mode and hence provides a resistance for this failure mode.

Other non-limitative and advantageous characteristics of the container according to the invention, taken individually or according to all the technically possible combinations, are the following:

-   -   said at least one reinforcing moulding consists in a         non-straight reinforcing moulding whose contour is non-straight;         said at least one non-straight reinforcing moulding has         advantageously the general shape of a curved line, a polygonal         line that is composed of at least two straight line segments, or         a polyline that is composed of at least one straight line         segment and one curved line segment; the non-straight         reinforcing moulding of the polygonal line type advantageously         comprises straight line segments having a length comprised         between 2 and 200 mm, and forming, between each other, an angle         of 90°+/−60°;     -   said at least one reinforcing area includes staggered patterns,         corresponding to the surface of said at least one reinforcing         moulding, and/or remaining patterns, corresponding to the         surface surrounding said at least one reinforcing moulding; the         staggered patterns and/or the remaining patterns have         advantageously a non-straight contour, and said non-straight         contour includes a junction portion located in a plane         perpendicular to the longitudinal axis (advantageously a point         whose tangent extends parallel to said perpendicular plane or a         section extending in said perpendicular plane), and two         longitudinal portions, connected by said junction portion,         located on a same side of said perpendicular plane; the         staggered patterns and/or the remaining patterns have         advantageously a concave contour, and at least two of said         staggered patterns and/or remaining patterns are imbricated into         each other;     -   said at least one reinforcing moulding is continuous, extending         over the whole circumference of said reinforcing area;     -   the reinforcing area includes several reinforcing mouldings,         distinct from each other and each ended by at least two ends;         the reinforcing mouldings have advantageously a non-straight         contour that forms U-shaped staggered patterns, which each         comprise a central straight line segment extended by two lateral         straight line segments; the U-shaped non-straight reinforcing         mouldings are advantageously arranged by couple, symmetrically         and opening on the opposite side from each other, and the         lateral straight line segments of one couple are arranged         between the lateral straight line segments of a U-shaped         non-straight reinforcing moulding of another couple.

The invention also proposes a method for manufacturing a container according to the invention.

This method comprises a step of forming the lateral wall, in the flat state or after its 3D-shaping, to provide said at least one non-straight reinforcing moulding.

DETAILED DESCRIPTION OF AN EXEMPLARY EMBODIMENT

The following description in relation with the appended drawings, given by way of non-limitative examples, will allow a good understanding of what the invention consists of and of how it can be implemented.

In the appended drawings:

FIG. 1 is a general and perspective view of a first container according to the invention, whose lateral wall includes a reinforcing area that includes several distinct and imbricated non-straight reinforcing mouldings;

FIG. 2 is a partial and enlarged view of the reinforcing area provided on the container of FIG. 1;

FIG. 3 is a general and perspective view of a variant embodiment of the first container according to the invention, whose reinforcing area includes a marking area;

FIG. 4 is a general and perspective view of a second container according to the invention, whose lateral wall includes several annular reinforcing strips that each include a continuous non-straight reinforcing moulding;

FIG. 5 is a partial and enlarged view of two annular reinforcing strips provided on the container of FIG. 4;

FIG. 6 is a general and perspective view of a variant embodiment of the second container according to the invention, two annular reinforcing strips of which are separated by an intermediate annular strip devoid of reinforcing moulding(s);

FIG. 7 is a schematic and longitudinal cross-sectional view of a container according to the invention, with a partial and enlarged view of said container to illustrate the cross-sections of the reinforcing mouldings.

CONTAINER

The container according to the invention, as shown in the figures, advantageously consists of a can, for packaging a foodstuff, for example.

The container comprises a can body 1 that is made of a metal material, for example aluminium or steel.

The can body 1 includes a lateral wall 2 that is closed by at least one bottom wall 3 (FIG. 7). In other words, the periphery of the bottom wall 3 is extended, upward, by the lateral wall 2.

In the case of a “two-part” can (FIG. 7), the lateral wall 2 and the bottom wall 3 of the can body 1 can be made single-piece (for example, by drawing). In the case of a “three-part” can, these two walls 2, 3 can also be made independently from each other, then attached to each other by any suitable operation (for example, by crimping or welding).

The lateral wall 2 has advantageously a generally cylindrical shape defining a longitudinal axis 2′, for example in the form of a straight circular cylinder.

The lateral wall 2 can advantageously be defined by different types of virtual lines:

-   -   longitudinal generating lines 2 a, advantageously lines parallel         to each other and parallel to the longitudinal axis 2′,     -   transverse directing lines 2 b, advantageously circular lines,         extending advantageously in planes perpendicular to the         longitudinal axis 2′ and centred to this longitudinal axis 2′,         and     -   inclined lines 2 c, advantageously helical lines for a         cylindrical container, extending between the longitudinal         generating lines 2 a and the transverse directing lines 2 b.

These different virtual lines 2 a, 2 b and 2 c are intended to form straight virtual lines 2 a, 2 b and 2 c (advantageously straight lines or straight-line segments) on the lateral wall 2 set flat (or unfolded or with cylindrical projection).

The lateral wall 2 includes two edges 21, 22 defining the height thereof (FIG. 1), i.e.:

-   -   a lower edge 21 connected to the periphery of the bottom wall 3,         and     -   an upper edge 22 delimiting an upper opening 5 through which the         packaged product is added/extracted.

This upper edge 22 is also intended to receive a closing element (not shown) to finalize the container (for example a peelable membrane or a metal disk with, possibly, a score line).

The container, and in particular the can body 1 thereof, hence delimits an inner volume 6 for the packaging of the product of interest.

Reinforcing Moulding(s)

The lateral wall 2 includes at least one reinforcing moulding 7 defining at least one reinforcing area 8.

By “reinforcing moulding”, it is meant in particular a beading (or a bead or a variation of curvature of the lateral wall 2) formed in the lateral wall 2.

Said at least one reinforcing moulding 7 consists of a reinforcing moulding whose shape is different with respect to the conventional annular mouldings (i.e. a moulding extending over the whole circumference of the lateral wall 2 and in a plane perpendicular to the longitudinal axis 2′ of this lateral wall 2).

Such a reinforcing moulding 7 is obtained, for example, by coining or embossing.

Such a reinforcing moulding 7 can be made:

-   -   in hollow (concave or recessed), towards the inner volume 6, or     -   in relief (convex or protruding), at the opposite of the inner         volume 6.

Preferably, said at least one reinforcing moulding 7 is provided in protrusion towards the inside of the lateral wall 2 (towards its inner face and towards the inner volume 6).

In other words, said at least one reinforcing moulding 7 has advantageously the shape of an open bead, opening towards the outside of the can body 1.

The cross-section of this reinforcing moulding 7 is advantageously identical (or at least approximately identical) along its length, without geometric breaking.

A reinforcing moulding 7 advantageously includes (FIG. 7):

-   -   a bottom 7 a, for example in the form of a line 7 a 1 or in the         form of a cylindrical portion 7 a 2, and     -   a contour 7 b, corresponding to the transition between surfaces.

In the case of a line 7 a 1, the cross-section of this reinforcing moulding 7 can have a curved shape, for example semi-circular or semi-oval.

For example, each reinforcing moulding 7 has the following dimensions:

-   -   a depth F comprised between 0.2 and 5 mm, and     -   a width L (or segment length in the cylindrical projection         plane) comprised between 2 and 200 mm.

By “depth”, it is advantageously meant the distance between, on the one hand, the bottom 7 a of the reinforcing moulding 7 and, on the other hand, the lateral wall 2. It also corresponds to the distance between the staggered surface 25 and the remaining surface 26, described hereinafter.

By “width”, it is advantageously meant the distance of the segment measured transversely to a longitudinal line 7′ of the reinforcing moulding 7 (FIGS. 2 and 5).

The depths and widths can be different according to the reinforcing mouldings 7 and the positions thereof.

The phenomenon of facet deformations occurring more at the centre of the lateral wall 2, the reinforcing mouldings 7 in this region can then be deeper; conversely, the reinforcing mouldings 7 located towards the ends can be shallower to resist to the axial stress while reducing their sensitivity thereof to the presence of a potential crimp.

The lateral wall 2 hence includes two sets of surfaces (FIG. 7):

-   -   at least one staggered surface 25 (also called “offset surface”         or “resulting surface”), corresponding to the surface of said at         least one reinforcing moulding 7, and     -   a remaining surface 26 (also called “residual surface” or         “origin surface”), corresponding to the surface surrounding said         at least one reinforcing moulding 7.

The remaining surface 26 advantageously extends within the volume of the portions of the lateral wall 2 that are located at the two edges 21, 22 thereof.

After moulding, the staggered surface 25 is offset with respect to the remaining surface 26, according to a least one constant or variable level.

A reinforcing area 8 can include a single reinforcing moulding 7 or several reinforcing mouldings 7.

Said at least one reinforcing area 8 extends over at least part of the height of the lateral wall 2 (or even the whole height of the lateral wall 2) and over at least part of the circumference of the lateral wall 2 (or even the whole circumference of the lateral wall 2).

Preferably, a reinforcing area 8 extends over:

-   -   a height of at least 5 mm, preferably at least 10 mm and/or     -   a transverse angular sector (according to the transverse         directing lines 8 b) of at least 10°, advantageously of at least         180°, and preferably of 360°, to form an annular reinforcing         strip.

Said at least one reinforcing area 8 advantageously includes at least one non-straight reinforcing moulding 7 (not in straight line).

The term “non-straight reinforcing moulding” includes the reinforcing mouldings 7 that, advantageously set flat or unfolded or by cylindrical projection, are in the form of curves, advantageously in the sense of a non-necessarily aligned unit, having or not one tangency break or more.

By “non-straight reinforcing moulding”, it is also meant a reinforcing moulding 7 whose contour 7 b or longitudinal line 7′ is non-straight (FIGS. 2 and 5).

By “longitudinal line 7′”, it is meant a line extending advantageously parallel and at equal distance from the two longitudinal edges of the reinforcing moulding 7.

The non-straight reinforcing mouldings 7 have advantageously a general shape chosen among:

-   -   a curved line (not shown), or     -   a polygonal line, composed of at least two straight line         segments (FIGS. 1 to 6), of     -   a polyline (not shown), composed of at least one straight line         segment and one curved line segment.

The curved line or the curved line segment can include or not a tangency break.

The reinforcing moulding 7 can include at least one ramification (for example, H, X or Y-shaped), or be provided with such ramifications.

For example, as described hereinafter in relation with FIGS. 1 to 6, a reinforcing moulding 7 of the polygonal type comprises:

-   -   straight line segments 72, 73 having a length comprised between         2 and 200 mm, and     -   straight line segments 72, 73 forming, between each other, an         angle comprised in the range 90°+/−60°, advantageously an angle         of 90°.

Still to ensure an optimum performance, said at least one reinforcing area 8 includes at least one set of patterns 9 that are defined by said at least one reinforcing moulding 7:

-   -   at least one staggered pattern 95, corresponding to the         staggered surface 25 of said at least one reinforcing moulding         7, and/or     -   at least one remaining pattern 96, corresponding to the         remaining surface 26 surrounding said at least one reinforcing         moulding 7.

By “pattern”, it is advantageously meant a set of geometric elements that are repeated.

The contour of these patterns 95, 96 advantageously corresponds to the contour 7 b of the reinforcing mouldings 7.

And said at least one reinforcing area 8 advantageously includes several of these patterns 9, which are formed by one or several reinforcing mouldings 7.

The patterns 9 may be identical to each other, or similar to each other, or different from each other (for example as regards the contours, the dimensions and/or the direction).

These patterns 9 are distributed, and repeated, within this reinforcing area 8.

A reinforcing area 8 can hence comprise a single elementary pattern 9, or even a sum of elementary patterns 9.

As developed hereinafter, the patterns 9 can be distinct from each other and juxtaposed to each other, or even imbricated to each other (FIGS. 1 to 3 and 5); the non-straight reinforcing bead 7 is hence terminated by ended by at least two ends 71 (as a function in particular of the shape and the number of ramifications thereof).

The patterns 9 can also form together a continuous reinforcing moulding 7, advantageously in the form of a frieze (FIGS. 4 to 6), potentially imbricated into at least another reinforcing moulding 7.

The staggered patterns 95 and/or the remaining patterns 96 have advantageously a concave contour; these concave staggered patterns 95 and/or remaining patterns 96 may be imbricated or not imbricated into each other.

By “concave pattern” (or “non-convex pattern”), it is advantageously meant a pattern in which there exist at least two points A and B, taken from this pattern, connected by a segment [A, B] that is not fully contained in said pattern.

The concave staggered patterns 95 and/or remaining patterns 96 hence include at least one concave portion.

For example, each staggered pattern 95 has a generally U-shape that includes a central straight-line segment 72 extended by two lateral straight-line segments 73.

The lateral straight-line segments 73 here extend, on the one hand, parallel to each other and, on the other hand, perpendicular and on a same side with respect to the central straight-line segment 72.

The U-shaped staggered patterns 95 hence comprise a concave portion delimited by the lateral straight-line segments 73.

As an alternative, the patterns 9 can also have a generally circle-arc or oval-arc shape (for example, a generally C-shape).

Still for example, the remaining patterns 96 can also comprise at least one concave portion.

In this respect, according to the example described hereinafter in relation with FIG. 5, the continuous reinforcing moulding 7 defines generally T-shaped remaining patterns 96 having two lateral concave portions.

By “imbricated”, it is meant a staggered pattern 95 or a remaining pattern 96 that extends within the volume of the concave portion, respectively, of another staggered pattern 95 or of another remaining pattern 96.

On this matter, FIGS. 1 to 3 show staggered patterns 95 that are imbricated into each other and FIGS. 4 to 6 show remaining patterns 96 that are imbricated into each other.

Still according to the invention, the non-straight contour 951, 961 of the staggered patterns 95 and/or of the remaining patterns 96 is non-straight.

This non-straight contour 951, 961 advantageously includes:

-   -   a junction portion 9511, 9611 (or bent portion) located in a         transverse plane P perpendicular to the longitudinal axis 2′,         advantageously a point whose tangent extends parallel to this         perpendicular plane P (FIG. 2) or a section extending in said         perpendicular plane P (FIG. 5), and     -   two longitudinal portions 9512, 9612, connected by said junction         portion 9511, 9611 and located on a same side of said         perpendicular plane P (advantageously on the side of the upper         edge 22).

Still according to the invention, the reinforcing area 8 can be defined by several types of virtual lines (respectively merged with the above-mentioned longitudinal generating lines 2 a, transverse directing lines 2 b and inclined lines 2 c), i.e.:

-   -   longitudinal generating lines 8 a, advantageously straight lines         parallel to each other and parallel to the longitudinal axis 2′,     -   transverse directing lines 8 b, advantageously circular lines,         advantageously extending in planes perpendicular to the         longitudinal axis 2′ and centred to this longitudinal axis 2′,         and     -   inclined lines 8 c, advantageously helical lines for a         cylindrical container, extending between the longitudinal         generating lines 8 a and the transverse directing lines 8 b, and         centred to this longitudinal axis 2′.

In other words, the inclined lines 8 c form an angle other than 0° or 90°, with respect to the planes perpendicular to the longitudinal axis 2′.

The different virtual lines 8 a, 8 b and 8 c hence pass through the reinforcing area 8 (or pass through this reinforcing area 8).

These different virtual lines 8 a, 8 b and 8 c are intended to form straight virtual lines 8 a, 8 b and 8 c (advantageously, straight lines or straight-line segments) on this reinforcing area 8 set flat (or unfolded or with cylindrical projection).

And in each reinforcing area 8, the virtual lines 8 a, 8 b, 8 c (advantageously the longitudinal generating lines 8 a, the transverse directing lines 8 b and the inclined lines 8 c) are each intersected by said at least one reinforcing moulding 7, advantageously by said at least one non-straight reinforcing moulding 7.

These virtual lines 8 a, 8 b, 8 c (advantageously the longitudinal generating lines 8 a, the transverse directing lines 8 b and the inclined lines 8 c) are each intersected at least once, or even several times, by said at least one reinforcing moulding 7 (in particular by the contour 7 b thereof).

In other words, the reinforcing area 8, set flat or unfolded or in cylindrical projection, is devoid of straight virtual lines 8 a, 8 b and 8 c that are devoid of at least one intersection by said at least one reinforcing moulding 7 (in particular by the contour 7 b thereof).

In still other words, the reinforcing area 8, set flat or unfolded in cylindrical projection, includes no straight virtual line 8 a, 8 b and 8 c that is not intersected at least once by said at least one reinforcing moulding 7 (in particular by the contour 7 b thereof).

Said at least one reinforcing area 8 advantageously extends over at least half the height of the lateral wall 2.

Still generally, the lateral wall 2 can include an annular reinforcing strip that comprises:

-   -   an above-mentioned reinforcing area 8, over a part of its         circumference, and     -   annular mouldings, conventional per se, over a remaining part of         its circumference.

Distinct Mouldings

According to first embodiments shown in FIGS. 1 to 3, the reinforcing area 8 includes several non-straight reinforcing mouldings 7, which are distinct from each other and each ended by two ends 71.

As also shown in FIG. 2, the non-straight reinforcing mouldings 7 form concave staggered patterns 95 that are imbricated into each other.

Herein, each non-straight reinforcing moulding 7 forms a U-shaped staggered pattern 95 that comprises the central straight-line segment 72 extended by the two lateral straight-line segments 73.

Each lateral straight-line segment 73 is ended, at the opposite of the central straight-line segment 72, by one of the free ends 71.

Each staggered pattern 95 is moreover directed so that its central straight line segment 72 and its lateral straight line segments 73 define angles comprised between 30° and 60° (preferably, angles between 40° and 50°, still preferably an angle of 45°) with respect to the longitudinal generating lines 8 a and to the transverse directing lines 8 b.

The central straight-line segment 72 and one of the lateral straight-line segments 73 form together the two longitudinal portions 9512 connected by a junction portion 9511.

As still illustrated in FIG. 2, the staggered patterns 95 are arranged by couple, symmetrically and opening on the opposite side from each other, to form together a H-shape.

The central straight-line segments 72 of a couple of staggered patterns 95 are hence juxtaposed to each other. The lateral straight-line segments 73 of the two juxtaposed staggered patterns 95 are aligned to each other.

For their imbrication into each other, a pair of lateral straight-line segments 73 of a couple of staggered patterns 95 is arranged between the lateral straight-line segments 73 of a staggered pattern 95 of another couple of staggered patterns 95.

Such a configuration of the concave and imbricated staggered patterns 95 is particularly efficient to provide an improved, and simultaneous, resistance to the facet deformations and to the axial crush deformations. This particular structure of the reinforcing area 8 has also for interest to limit, or even block, the propagation of the deformations.

As shown in FIG. 3, the reinforcing area 8 can be provided with a marking area 10 that is devoid of reinforcing mouldings 7.

This marking area 10 is surrounded/limited by these reinforcing mouldings 7.

The marking area 10 here has an oval shape, but it could have any other desired shape.

This marking one 10 is particularly interesting for the readability of a visual element, such as a text, a logo or an image.

Continuous Mouldings

According to the second embodiments shown in FIGS. 4 to 6, the lateral wall 2 comprises continuous non-straight reinforcing mouldings 7 that each extend over the whole circumference of the reinforcing area 8.

More precisely, each non-straight reinforcing moulding 7 here forms a repetition of staggered patterns 95, identical to each other, which are arranged along two lines, alternately and connected to each other.

Here again, as described hereinabove in relation with FIG. 5, each non-straight reinforcing moulding 7 forms U-shaped staggered patterns 95 that each comprise the central straight-line segment 72 extended by the two lateral straight-line segments 73.

The central straight-line segments 72 of the two lines are arranged parallel to each other; and the lateral straight-line segments 73 of the two lines are arranged parallel to each other.

The lateral straight-line segments 73 of two opposite staggered patterns 95 are connected by transverse straight-line segments 74 (here parallel to the central straight-line segments 72).

The staggered patterns 95 of a line are here directed so as to open towards the staggered patterns 95 of the other line.

Each staggered pattern 95 is moreover arranged so that each of its lateral straight-line segments 73 is located between the two lateral straight-line segments 73 of an opposite staggered pattern 95.

Each U-shaped staggered pattern 95 is moreover directed so that its central straight-line segments 72 and its lateral straight-line segments 73 are directed, respectively, parallel to the transverse directing lines 8 b and to the longitudinal generating lines 8 a.

The central straight-line segments 72 and the two lateral straight-line segments 73 form a staggered pattern 95 and a remaining pattern 96 whose contours 951, 962 each comprise, respectively, the above-mentioned junction portion 9511, 9611 and two longitudinal portions 9512, 9612.

The continuous reinforcing moulding 7 here also defines generally T-shaped remaining patterns 96 having two lateral concave portions.

The successive remaining patterns 96 are inverted with respect to each other and are imbricated into each other.

The lateral wall 2 hence includes annular reinforcing strips 8, each including a continuous non-straight reinforcing moulding 7, separated from each other by narrow and non-moulded annular strips 11 (FIG. 5).

This configuration of the annular reinforcing strips 8 has for interest to receive a readable visual element, such as a text, a logo or an image.

According to a variant shown in FIG. 6, the lateral wall 2 may be provided here again with a marking area 10 that is devoid of reinforcing mouldings 7 and that is surrounded/limited by these reinforcing mouldings 7.

This marking area 10 here has the shape of a continuous annular strip.

Method

The present invention also relates to a method for manufacturing a container according to the invention.

This method advantageously comprises a step of forming the lateral wall 2, in the flat state or after its 3D-shaping, to provide said at least one reinforcing moulding 7.

This forming step is for example performed by means of tools liable to be composed of male and female parts, to imprint the shape to the metal.

Those tools may for example be in the form of planar parts (rails) or warped parts (mandrels).

This method allows obtaining a lateral wall 2 that hence includes two sets of surfaces:

said at least one staggered surface 25 and said at least one remaining surface 26. 

1. A container comprising a can body (1) made of a metallic material, wherein the can body (1) comprises a lateral wall (2) closed by at least one bottom wall (3), the lateral wall (2) includes at least one reinforcing area (8) that extends over at least part of the height and the circumference of said lateral wall (2), the reinforcing area (8) has a plurality of virtual lines (8 a, 8 b, 8 c) that are intended to form straight virtual lines (8 a, 8 b, 8 c) on said reinforcing area (8) set flat, advantageously longitudinal generating lines (8 a), transverse directing lines (8 b) and inclined lines (8 c), the reinforcing area (8) includes at least one reinforcing moulding (7), wherein said virtual lines (8 a, 8 b, 8 c) are each intersected by said at least one reinforcing moulding (7).
 2. The container according to claim 1, wherein said at least one reinforcing moulding (7) consists of a non-straight reinforcing moulding (7) whose contour (7 b) is non-straight.
 3. The container according to claim 2, wherein said at least one non-straight reinforcing moulding (7) has the general shape of: a curved line, a polygonal line that is composed of at least two straight line segments (72, 73), or a polyline that is composed of at least one straight line segment and one curved line segment.
 4. The container according to claim 3, wherein the non-straight reinforcing moulding (7) of the polygonal line type comprises straight line segments (72, 73): having a length comprised between 2 and 200 mm, and forming, between each other, an angle of 90°+/−60°.
 5. The container according to claim 1, wherein said at least one reinforcing area (8) includes: staggered patterns (95), corresponding to the surface of said at least one reinforcing moulding (7), and/or remaining patterns (96), corresponding to the surface surrounding said at least one reinforcing moulding (7).
 6. The container according to claim 5, wherein the staggered patterns (95) and/or the remaining patterns (96) have a non-straight contour (951, 961), and wherein said non-straight contour (951, 961) includes: a junction portion (9511) located in a plane (P) perpendicular to the longitudinal axis (2′); and two longitudinal portions (9512), connected by said junction portion (9511), located on a same side of said perpendicular plane (P).
 7. The container according to claim 5, wherein the staggered patterns (95) and/or the remaining patterns (96) have a concave contour, and wherein at least two of said staggered patterns (95) and/or remaining patterns (96) are imbricated into each other.
 8. The container according to claim 1, wherein said at least one reinforcing moulding (7) is continuous, extending over the whole circumference of said reinforcing area (8).
 9. The container according to claim 1, wherein the reinforcing area (8) includes several reinforcing mouldings (7), distinct from each other and each ended by at least two ends (71).
 10. The container according to claim 9, wherein the reinforcing mouldings (7) have a non-straight contour that form U-shaped staggered patterns (95), which each comprise a central straight line segment (72) extended by two lateral straight line segments (73).
 11. The container according to claim 10, wherein the U-shaped non-straight reinforcing mouldings (7) are arranged by couple, symmetrically and opening on the opposite side from each other, and wherein the lateral straight-line segments (73) of one couple are arranged between the lateral straight-line segments (73) of a U-shaped non-straight reinforcing moulding (7) of another couple.
 12. The container according to claim 6, wherein the staggered patterns (95) and/or the remaining patterns (96) have a concave contour, and wherein at least two of said staggered patterns (95) and/or remaining patterns (96) are imbricated into each other.
 13. The container according to claim 2, wherein said at least one reinforcing area (8) includes: staggered patterns (95), corresponding to the surface of said at least one reinforcing moulding (7), and/or remaining patterns (96), corresponding to the surface surrounding said at least one reinforcing moulding (7).
 14. The container according to claim 3, wherein said at least one reinforcing area (8) includes: staggered patterns (95), corresponding to the surface of said at least one reinforcing moulding (7), and/or remaining patterns (96), corresponding to the surface surrounding said at least one reinforcing moulding (7).
 15. The container according to claim 4, wherein said at least one reinforcing area (8) includes: staggered patterns (95), corresponding to the surface of said at least one reinforcing moulding (7), and/or remaining patterns (96), corresponding to the surface surrounding said at least one reinforcing moulding (7).
 16. The container according to claim 2, wherein said at least one reinforcing moulding (7) is continuous, extending over the whole circumference of said reinforcing area (8).
 17. The container according to claim 3, wherein said at least one reinforcing moulding (7) is continuous, extending over the whole circumference of said reinforcing area (8).
 18. The container according to claim 4, wherein said at least one reinforcing moulding (7) is continuous, extending over the whole circumference of said reinforcing area (8).
 19. The container according to claim 5, wherein said at least one reinforcing moulding (7) is continuous, extending over the whole circumference of said reinforcing area (8).
 20. The container according to claim 6, wherein said at least one reinforcing moulding (7) is continuous, extending over the whole circumference of said reinforcing area (8). 